Starting valve



June 3, 1930. w. B. s. wHALEY 1,761,282

' STARTING VALVE Original Filed Dec. 18,. 1924 @uy N y A' vEY Patented June 3, 1930 I below the head, 8, of

.Above the cup, 12, and between it and a bear- UNITED NSTATES PATENT OFFICE WARE v v i STARTING .VALVE Application filed. December 18, 1924, Serial No. 756,858. Renewed October 15, 1929.

These two springs 13 and 14 place the valve heads 8 and 10 under an initial downward pressure,-the valve head, l0, having 'a greater downward pressure than the valve head,.8. 1

Pivoted to the lower side of the sleeve, 5, I provide a shoe, 15, which is securedin position by,a transverse pin,V 16, passing My invention relates to valves designed to operate with air under high pressure, and of the poppet type, and more particularly to the valves controlling the supply of air under high pressure in starting large size internal combustion engines. My valve can also be used wherever the flow of liquids is to be controlled, especially if under high pressure. through the shoe, l5, and a lug, 17 ,l on each Fig. 1 is a front View of the valve, partly side thereof, which latter I prefer to make 1n section. integral with the sleeve, 5, as shown in Fig. 2 is a side view of the valve, also partly in section.

Referring to the drawing, it is seen that my valve is entirely enclosed in a body, `1, and cap 2. The cap 2, is bolted to the upper portion of the body, 1, by means of a peripherally arrangedv series of bolts, 3, passing through a flange on the lower part of the cap, 2, and a similar flange at the topof the body, 1. The cap, 2, may make a straight inlet connection to the body, 1, or an elbow, as shown, the particular form of the cap, 2, being no part of my invention, as any form may be used. The body, 1, has a hollow interior, 4, in which is mounted a sleeve, 5. The sleeve, 5, is free to move longitudinally in the interior, 4, of the body, 1, and has concentrically secured therein a spindle, 7, having a conical valve head, 8, at its upper end. The spindle, 7, passes through a spindle, 9, so that the head, 8, engages with the upper end of the spindle, 9, which forms a seat therefor, and which spindle, 9, is also provided at its upper end with a conical head, 10, which finds a seat in the body, 1, or a collar, 30, inserted in the body for the purpose.

Passing radially through the head, 10, I have one or more small ducts, 11, forming communications between that portion of the interior, 4, of the valve which lies above the outlet, 28, and the space immediately pin, 7. The spindle, 9, is screwed or otherwise secured concentricallyV into a cup 12, at its lower end.

Fig. 1. The shoe, 15, is free to rock on the pin, 16, through a given angle. The purpose of pivoting the shoe, 15, is obviously to enable it to ride properly on the cam, 18, irrespective of the annular position of the cam. Below the shoe, 15,'I provide a cam, 18, whichbears against it, and which is secured to or integral with arshaft, 19. In the drawing I show the cam, 18, in circular form, and mounted or secured eccentrically on the` shaft, 19, as shown. .To the Fig.V 1, Iprovidea crank, 20, keyed to the shaft, 19, whereby it is rotated. `The opposite end4 of the shaft, 19, has a concentric, longitudinal recess, 21, in which I mount a spring, 22, bearing at one end against the bottom of the recess, 21, and at its opposite end against aplug, 23. The plug, 23, occupies a recess in the side of the bottom of the body,'1, as shown in Fig. 1, anduis secured in position by a shouldered screw cap, 24, which bears against it at its center, by means of a projection, 25, provided for the purpose,on thel screw cap. This puts the -spring under tension and forces the shaft, 19, to the left as shown `in Fig. 1. The shaft, 19, is provided vwith a conical shoulder, 26, which bears against the chamferedninside edge of the bearing hole, 27, in the body, 1, through whichlthe crank end of the' shaft passes, by pressure exerted by the spring, 22,.wh`ich tends at `all times to move fthe shaft, 19, to the left, Fig. 1, as is easily understood by reference to the drawings, and thereby makes an airtight joint between the shaft, 19, and therbo y, 1.

"Instead of having theA conical shoulder,

ing, 6, for the spindle, 9, I provide a spring, 13, and'below the cup, 12, and above the sleeve, 5, I provide a lighter spring, 14.

26,-bear"a`gainst the body, 1,'1 may insert a left hand end of the shaft, 19, asshown in u 20, .the'parts thereby closing the valve,

sleeve for it to ind a seat on as shown in Fig. 1.

In order to facilitate manufacture, I insert in the body, 1, a member, 6, which forms a bearing for the spindle, 9, throughout its longitudinal axis, a valve seat, 30, at its upper end for the head, 10, and an abutment for the spring, 13, at its lower end. This member is held in place by the cap, 2 as shown. One or more openings, 31, in the member, 6, permit the flow of air through the valve.

In practice, it is often necessary to have a valve such as described, adapted to be operated manually to permit the air to pass therethrough in one direction, coupled with means to permit the air to pass through in the opposite direction automatically as a pressure relief feature. The valve shown in the present application is well suited for use in such a case. It is obvious that if the pressureof air in the connection, 28, is suflicient to raise either the valve 10, or the valve, 8, oil its seat, then air will iiow tautomatically .from the connection Q8 to the connection 2, and my device then .acts virtually as a check valve.

The body, 1, ,at one side near the top, and abovey the me ber, 6, is provided with an outlet connection, 28, provided with a iange, 29, or other suitable means of making pipe connections thereto.

The normal positions of vthe parts valve are shown in the two figures. When it is desired to open the valve .so as to permitv'air or liquid to flow from the inlet cap to the outlet, ,28, the crank, 20, is moved clockwise, F ig. 2, thereby causing the cam, 18, to bear upwardly against the shoe, 15, carrying with it the sleeve, 5, which exerts pressure against the spring, 14, and at the same time opens the small valve head, 8, permitting a certainv portion of the media under pressure from the inlet to pass through the ducts 11, into the outlet, and thereby overcome to a degree the pressure acting upon the large valve head, 10. The center portion, 30, .of .the sleeve, 5, after it has moved upwardly .a short distance, bears against the bottom of the cup, 12, and causes the same to `be moved upwardly by direct pressure from the cam, 18, thereby putting the spring, 13, under pressure, and carrying with1 it the valve, 9, integrally attached to the head, 10. In this way, communication is set up between the inlet :and the outlet Aof thevalve. The cam, 18, and the other parts are so arranged that when the hand is removed from the crank, assume their initial position, so that no media oi? the 'can pass.

Having Vdescribed my invention so anylone .skilled in the art to which it pertains,

w1 canI make and use the saine, what I claim,kas

my invention, and wish to secure by Letters Patent is:

I claim:

In a device of the character described, the combination of a substantially cylindrical casing, a main valve therein, a relief valve for said 'main valve, a sleeve within said casing having a cam follower pivotally connected thereto, said sleeve being operatively related to said main valve and said relief valve and a ycam engaging said follower whereby said sleeve is actuated to open said relief valve and said main valve in succession.

In testimony whereof, I aHiX my signature.

WILLIAM B. SMITH IVHALEY. 

